ABERDEEN, Md. (CBS/AP) — Authorities say a woman who was a temporary worker at the Rite Aid distribution center in Aberdeen, Maryland, opened fire and killed three people before turning the gun on herself on Thursday morning. Three others were injured in the shooting.

The shooting happened about 45 minutes southwest of Wilmington, Delaware.

Harford County Sheriff Jeffrey Gahler says the suspect reported for the workday before opening fire inside and outside the facility shortly after 9 a.m. Gahler says she shot and killed three people and then turned the gun on herself. She died at the hospital from a self-inflicted gunshot wound to the head.

‘I love you both more than you will ever know. There is a shooter in the building. I am hiding. I love you. Be good and take care of daddy and the pets if something should happen,” said Alexie Sharmann in a text message to her mother as shots rang out.

Gahler stated that Moseley was armed with a handgun and several magazines. He said no shots were fired by law enforcement at the scene.

They do not yet have a motive for the shooting.

One person was transported to Christiana Hospital in Delaware in serious condition. Johns Hopkins Bayview Medical Center said it had received four patients with gunshot wounds from the shooting. Hospital spokeswoman Monica Stone said in an email Thursday that she was unable to provide details about the patients’ conditions.

A Rite Aid spokesperson says about 1,000 people work at the facility.

“We are deeply saddened by the events that transpired this morning at the Liberty support facility, which is part of Rite Aid’s Perryman Distribution Center in Aberdeen, Md. Local authorities have confirmed that there are multiple fatalities and casualties,” the company said in a statement.

Rite Aid said the facility is closed and are determining when it will be reopened.

“We are continuing to work closely with authorities as they conduct their investigation. The facility has been closed and we are assessing when it will be reopened. Grief counselors will be made available to our associates and will remain available as long as they are needed. Our thoughts and prayers go out to all those involved in this tragic incident, as well as their loved ones.”

CBS Baltimore reports the call came from the warehouse complex shortly after 9 a.m.. Some area schools were also placed on lockdown.

We can confirm there was a shooting in the area of Spesutia Road and Perryman Road. Multiple victims. The situation is still fluid. Please avoid the area. Media staging area still TBD.

Mike Carre, an employee of a furniture logistics operation next to the distribution center where the violence erupted, says he helped tend to a wounded man.

Carre locked the doors of his workplace after the injured man came hobbling in, bleeding from his leg. He called 911 from a bathroom before helping colleagues wrap the man’s blood-soaked jeans above his injury to cut off blood flow.

At a nearby fire station, family members were waiting to be reunited with loved ones. Police blocked off the road outside but were waving in cars driven by people who said they were there to meet up with people who were at the distribution center.

Maryland Gov. Larry Hogan says his office is monitoring the situation in Aberdeen and that the state stands ready to offer any support.

We are closely monitoring the horrific shooting in Aberdeen. Our prayers are with all those impacted, including our first responders. The State stands ready to offer any support. https://t.co/fzugpo8C1Z